/*
 * Orika - simpler, better and faster Java bean mapping
 *
 * Copyright (C) 2011-2013 Orika authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ma.glasnost.orika.converter.builtin;

import ma.glasnost.orika.MappingContext;
import ma.glasnost.orika.impl.util.ClassUtil;
import ma.glasnost.orika.metadata.Type;
import ma.glasnost.orika.metadata.TypeFactory;

/**
 * ConstructorConverter will converter from one type to another if there exists
 * a constructor for the destinationType with a single argument matching the
 * type of the source.
 * 
 * @author matt.deboer@gmail.com
 * @author elaatifi@gmail.com
 */
public class ConstructorConverter extends BuiltinCustomConverter<Object, Object> {
    
    public boolean canConvert(Type<?> sourceType, Type<?> destinationType) {
        try {
            return destinationType.getRawType().getConstructor(sourceType.getRawType()) != null;
        } catch (NoSuchMethodException e) {
            try {
                if (sourceType.isPrimitive()) {
                    return destinationType.getRawType().getConstructor(ClassUtil.getWrapperType(sourceType.getRawType())) != null;
                } else if (sourceType.isPrimitiveWrapper()) {
                    return destinationType.getRawType().getConstructor(ClassUtil.getPrimitiveType(sourceType.getRawType())) != null;
                } else {
                    return false;
                }
            } catch (NoSuchMethodException e1) {
                return false;
            }
        } catch (Exception e) {
            return false;
        }
    }
    
    public Object convert(Object source, Type<?> destinationType, MappingContext context) {
        try {
            return destinationType.getRawType().getConstructor(source.getClass()).newInstance(source);
        } catch (NoSuchMethodException e) {
            Type<?> sourceType = TypeFactory.valueOf(source.getClass());
            try {
                if (sourceType.isPrimitive()) {
                    return destinationType.getRawType().getConstructor(ClassUtil.getWrapperType(sourceType.getRawType())).newInstance(source);
                } else if (sourceType.isPrimitiveWrapper()) {
                    return destinationType.getRawType().getConstructor(ClassUtil.getPrimitiveType(sourceType.getRawType())).newInstance(source);
                } else {
                    return false;
                }
            } catch (Exception e1) {
                return false;
            }
        } catch (Exception e) {
            throw new IllegalArgumentException(e);
        }
    }
    
}
